| File | Type | Notes |
|---|---|---|
| langford.ecl | ECLiPSe CLP | |
| langford.pi | Picat | |
| Langford_jacop.scala | JaCoP/Scala | |
| langford.lp4 | ASP Gringo 4 | |
| langford_sicstus.pl | SICStus Prolog | |
| langford_bp.pl | B-Prolog | |
| langford.co | Comet | |
| ROD.pl | pl | A Perl program written by John Miller based on a pattern found by Roy O. Davies that generates a single Langford sequence (for large n). Counting the number of sequences is likely to be intractable. |
| langford2.mzn | MiniZinc | |
| langford_ortools.py | or-tools/Python | |
| langford.cs | or-tools/C# | |
| Langford.aim | AIMMS+CP | |
| models.inline.md | ||
| Langford_oscar.scala | OscaR |